// 定义一个有向图 (digraph)，名为 "WorkflowExample"

digraph WorkflowExample {

​

    // --- 全局设置 ---

    graph [ fontname="Microsoft YaHei", fontsize=12, label="一个简单的工作流程示例", labelloc="t", rankdir="LR" ];

    node [ fontname="Microsoft YaHei", fontsize=10, shape=box, style=filled, fillcolor="lightblue", margin="0.1,0.1" ];

    edge [ fontname="Microsoft YaHei", fontsize=9, color="darkslategray" ];

​

    // --- 节点定义 ---

    Start [label="开始", shape=ellipse, fillcolor="palegreen"];

    Process1 [label="步骤 1:\n数据准备"];

    Process2 [label="步骤 2:\n核心处理"];

    Decision [label="条件判断:\n是否成功?", shape=diamond, fillcolor="lightyellow"];

    End_Success [label="结束 (成功)", shape=ellipse, fillcolor="palegreen"];

    End_Fail [label="结束 (失败)", shape=ellipse, fillcolor="lightcoral"];

​

    // --- 边定义 ---

    Start -> Process1 -> Process2 -> Decision;

    Decision -> End_Success [label="是"];

    Decision -> End_Fail    [label="否", style=dashed, color=red];

​

    // --- 子图 ---

    subgraph cluster_Processing {

        label = "处理阶段"; bgcolor = "lightgrey"; style = "filled";

        Process1; Process2; Decision; // Nodes within subgraph

    }

}